50,000 hours average rated life Last 2.5 times longer than 600mm 18W fluorescent T8 Tri-phosphor lamp High switching cycles – 200,000X High lumen efficacy - 147lm/W Omni-directional light distribution and wide beam angle Minimum and maximum operating temperature: -20°C to 50°C Glass construction and polycarbonate end-caps Works only with compatible electronic ballast Must replace the fluorescent starter with LED dummy starter whenused with magnetic/ CCG ballast Suitable for direct mains operation (AC 220-240V) with single-end AC input Ideal for factories, parking lots, supermarkets, department stores, schools and offices